Need Advice: Older Sibling Running In My House :(

[MamaBear]

I just started watching a sweet little 10 month old boy last week full time. He has an older sister that is 4 years old that goes to a local preschool....

[youretooloud]

Most of my daycare parents teach at the same school. So, they all get here at the same time.

The seven year old sister of one of my kids...